Table of Contents
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LG Ceiling Duct-Type
Air Conditioner
INSTALLATION MANUAL
MODELS: LB-C246HSA0
LB-C306GTA0
LB-C366GTA0
LB-C428GTA0
LB-C488ETA0
LB-C608ETA0
IMPORTANT
• Please read this instruction sheet completely before
installing the product.
• When the power cord is damaged, replacement work shall
be performed by authorized personnel only.
• Installation work must be performed in accordance with
the national wiring standards by authorized personnel
only.
• Please retain this installation manual for future reference after
reading it thoroughly.
LG
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Summary of Contents for LG LB-C246HSA0
- Page 1 LG Ceiling Duct-Type Air Conditioner INSTALLATION MANUAL MODELS: LB-C246HSA0 LB-C306GTA0 LB-C366GTA0 LB-C428GTA0 LB-C488ETA0 LB-C608ETA0 IMPORTANT • Please read this instruction sheet completely before installing the product. • When the power cord is damaged, replacement work shall be performed by authorized personnel only.
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Page 2: Table Of Contents
Ceiling Duct Type Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements Safety Precautions....3 Introduction ......7 Installation of Indoor, • Four Type “A” screws • Level Outdoor Unit ......8 • Connecting cable • Screw driver • Electric drill •... -
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Be sure to read before installing the air conditioner. I Be sure to observe the cautions specified here as they include important items related to safety. I Incorrect operation due to ignoring instruction will cause harm or damage. - Page 4 Safety Precautions Do not modify power cable length. Always intstall a circuit breaker and exclusive switching board. • It will cause fire or electric shock. • No installation may cause fire and electric shock. Use a rated breaker and fuse. Do not use a defected circuit breaker and exclusive switching board.
- Page 5 Safety Precautions I Installation Always inspect gas leakage after Install the drain hose to ensure that drain installation and repair of product. can be securely done. • Otherwise, it may cause failure of product. • Otherwise, it may cause water leakage. Keep the level even when install the Do not install the product where the noise product.
- Page 6 Safety Precautions Do not insert your hand or bars, etc. into Do not use the product at the closed space the air inlet/outlet. for a long time. • Otherwise, it may cause personal injury. • Otherwise, it may cause suffocation due to poor oxygen.
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Page 7: Introduction
Installation Parts Provided Introduction Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. This symbol indicates special notes. NOTICE Features Air filters Air outlet vents (Optional) -
Page 8: Installation Of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Selection of the best location Indoor unit Install the air conditioner in the location that Inspection hole satisfies the following conditions. Top view (600X600) Control box (unit: mm) • The place shall easily bear a load exceeding four times the indoor unit’s weight. - Page 9 Installation of Indoor, Outdoor Unit Piping length and the elevation Pipe Size *Additional Length A(m) Elevation B(m) (Diameter: Ø) refrigerant Capacity (g/m) Liquid Standard Max. Standard Max. 5/8" 1/4" 18K BTU/h 24K BTU/h 5/8" 1/4" 30K BTU/h 5/8" 1/4" 36K BTU/h 5/8"...
- Page 10 Installation of Indoor, Outdoor Unit Indoor unit installation Installation of Unit Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension F (G) H...
- Page 11 Installation of Indoor, Outdoor Unit • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto the Old building New building suspension bolts for locking the suspension bolts on the ceiling.
- Page 12 Installation of Indoor, Outdoor Unit CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 5mm. Front of view •...
- Page 13 Installation of Indoor, Outdoor Unit • Drill the piping hole with 70mm dia, hole core WALL Indoor Outdoor drill. • Piping hole should be slightly slant to the outdoor side. 5~7mm INSULATION, OTHERS Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement.
- Page 14 Installation of Indoor, Outdoor Unit Install the remote control box and INSTALLATION OF REMOTE CONTROL BOX cord correctly. POINT OF REMOTE CONTROLLER INSTALLATION • Although the room temperature sensor is in the indoor unit, the remote control box should be installed in such places away from direct sunlight and high humidity. INSTALLATION OF THE REMOTE CONTROL BOX ROUTING OF THE REMOTE CONTROL CORD •...
- Page 15 Installation of Indoor, Outdoor Unit WIERED REMOTE CONTROLLER INSTALLATION • Since the room temperature sensor is in the remote controller, the remote controller box should be installed in a place away from direct sunlight, high humidity and direct supply of cold air to maintain proper space temperature.
- Page 16 Installation of Indoor, Outdoor Unit Perform the work according to the Service Manual REFRIGERANT PIPING or Installation Guide. • Use two spanners when connecting the refrigerant pipe to the unit. Flared connection (Union) • Make a bend with a radius as large as possible.
- Page 17 Installation of Indoor, Outdoor Unit Perform the electrical wiring work according to the ELECTRICAL WIRING electrical wiring connection. • All wiring must comply with local Circuit Breaker requirements. Main power source • Select a power source that is capable of Switch box supplying the current required by the air conditioner.
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Page 18: Connecting Pipes To The Indoor Unit
Connecting Pipes to the Indoor Unit Connecting Pipes to the Indoor Unit Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the Copper Slanted Uneven Rough tube following procedure. 90° Cut the pipes and the cable. - Page 19 Connecting Pipes to the Indoor Unit Pipe bending Annealed copper pipe with small diameter (ø6.35 or ø9.52) can be easily bent manually. In this case, secure large R(radius) for the bend section and gradually bend pipe. If annealed copper pipe is large in diameter (ø15.88 or ø19.05), bend pipe with bender.
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Page 20: Pipes: Gas Side
Connecting Pipes to the Outdoor Unit Connecting Pipes to the Outdoor Unit Connecting the pipes to the Outdoor unit • Align the center of the pipings and sufficiently tighten the flare nut with fingers. • Finally, tighten the flare nut with torque wrench until the wrench clicks. -
Page 21: Connecting Cables Between Indoor Unit And Outdoor Unit
Connecting Cables between Indoor Unit and Outdoor Unit Connecting Cables between Indoor Unit and Outdoor Unit Connecting cables to the Indoor Unit I Connect the wires to the terminals on the control board individually according to the outdoor unit connection. •... - Page 22 Connecting Cables between Indoor Unit and Outdoor Unit Connecting the cable to the Outdoor Unit • Remove the Cover control from the unit by loosening a screw. Outdoor unit Terminal block Connect the wires to the terminals on the Cord Clamper control board individually as following.
- Page 23 Connecting Cables between Indoor Unit and Outdoor Unit Form the pipings • Wrap the connecting portion of indoor unit with Seal a small opening the Insulation material and secure it with two around the pipings Plastic Bands. (for the right pipings) with gum type sealer.
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Page 24: Air Purging Of The Connecting Pipes And The Indoor Unit
Air Purging of the Connecting Pipes and the Indoor Unit Air Purging of the Connecting Pipes and the Indoor Unit The air which contains moisture remaining in the refrigeration cycle may cause a malfunction on the compressor. 1. Confirm that both the liquid side valve and the gas side valve are set to the closed position. 2. -
Page 25: Group Control
Group Control It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent. Main PCB Indoor Unit 1 Indoor Unit 2 Indoor Unit 16 Terminal(Local Supply) Terminal(Local Supply) Terminal(Local Supply) Block Block Block Connector Connector... -
Page 26: E.s.p.(External Static Pressure) Setting
E.S.P.(External Static Pressure) Setting E.S.P.(External Static Pressure) Setting Open the rear cover of the wired remote-controller to set the mode. Select one of three selectable modes as follows. I Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2. -
Page 27: How To Set E.s.p
How to Set E.S.P? How to Set E.S.P? Procedure of RPM change: Ex) External Static pressure is 4mmAq for Model Name "LB-C246HSA1" • To protect the unit, compressor is designed to be off during E.S.P. setting. Push the "On/Off" button. The unit will start. -
Page 28: High-Static Motor Connection (For 48K/60K Model)
High-Static Motor Connection (For 48K/60K Model) [Table. 1] Static Pressure(mmAq) Model Name Step(Hi/Med/Lo) Setting Value 1(16.5 CMM) 18 CMM LB-C246HSA0 100(15 CMM) 16.5 CMM 14 CMM LB-C306GTA0 32 CMM 1(29 CMM) LB-C366GTA0 230(27.5 CMM) 29 CMM LB-C428GTA0 26.5 CMM 1. Be sure to set the value refering table 1. Unexpected set value will cause mal-function. -
Page 29: Checking The Power Cord
Checking the Power Cord (For 48/60K Model) Checking the Power Cord (For 48/60K Model) If the main cable for power supply is connected incorrect or wrong, it shall cause strange noise from the compressor and cooling operation does not work. Troubles and Solutions Troubles Solutions... - Page 30 P/No.: 3828A20330R...
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